Answer:
The answer is: Sister chromatids are split
Answer: Option B.
Absorb ultraviolet Ray's from the sun.
Explanation:
Ozone layer is the lower part of the stratosphere that absorb the ultraviolet rays of the sun. It is made up of three oxygen (O3). It is about 20 to 30 kilometers from the Earth. The ozone layer is of utmost important because it absorb the ultraviolet Ray's from the sun which can damage plants and animals. The ultraviolet rays can cause Mutation of the DNA thereby leading to death of plants and animals.
Answer:
See the answer below
Explanation:
<em>The DNA of eukaryotic organisms being present in the nucleus while the protein-synthesizing organelle, the ribosome being present in the cytoplasm poses a spatial problem. It means that transcribed DNAs (messenger RNA) in the nucleus would have to somehow be transported to the ribosome in order for the cell to successfully synthesize proteins.</em>
The problem of transporting the messenger RNA is solved by two features of the cell:
- The presence of pores in the nuclear envelop
- The presence of transport proteins in the nucleus
<u>The mRNA binds to the transport proteins to form mRNA-protein complexes and is transported through the nuclear pores, often with the assistance of ATP. </u>
Answer:
True
Explanation:
Because of Pangea, they show evidence of fossils deep underground in different continents
